states postal service. [ man ] we are the united states postal service. [ male announcer ] and our priority is you. go to usps.com® and try it today. became big business overnight? ♪ like, really big... then expanded? ♪ or their new product tanked? ♪ or not? what if they embrace new technology instead? ♪ imagine a company's future with the future of trading. company profile. a research tool on thinkorswim. from td ameritrade. >>> you're watching cnbc "squawk on the street," live from the financial capital of the world, the opening bell set to ring in just about a minute and a half. a lot going on. we're going to watch visa closely today. that's likely to be the biggest drag on the dow, given the price-weighted index. >> this is a time that every time it has gotten hit, you had to buy it. when it settled down. this time is no different. i was talking with david walking over. am i a little less bullish today? we had such a remarkable run. if i stay bullish forever, what does that make me? what's working are companies that hadn't been working. expedia, disappointed horribly. visa, sta